1.University of Science and Technology Beijing��Beijing 100083 ,China; 2 Baogang Iron and Steel Co Ltd, Baotou 014010,Inner Mongolia, China; 3.Baotou Iron Steel Vocational Technical College, Baotou 014010,Inner Mongolia,China
Abstract��Analysis on metallography,macro graphy and fracture appearance were carried out on broken Q215 welded steel pipe.The results show that the higher temperature and the longer time during welding lead to grain growing and failure finally.
������;������;. Q215���ܵĶ���ԭ�����[J]. �й������ڿ���, 2007, 25(6): 52-0.
FENG Yan��qing;WANG Xiao��li;. Failure Analysis of Q215 Welded Steel Pipe. Chinese Journal of Iron and Steel, 2007, 25(6): 52-0.
2007, Vol. 25 
